electric flyswatters (sometimes called mosquito bats) The handle contains batteries and a charging mechanism that generates high voltage. The circuit is composed of an electronic oscillator, a step-up transformer and a voltage multiplier, similar to the circuit in an electroshock weapon or stun gun, but with much lower power.The grid of the flyswatter is electrically charged to a voltage of between 500 and 1500 V DC, activated by pressing and holding a button. When the electrically conductive body of a fly nearly bridges the gap between electrodes, a spark jumps through the fly. A capacitor attached to the electrodes discharges during the spark, and this initial discharge usually stuns or kills the fly. If the button is still pressed, the continuous current will roast and kill the fly. Many flyswatters have a three layer grid to prevent people from touching both electrodes. The outermost grids or rods are at the same electrical potential, and are open enough to allow an insect to contact the inner charged grid...